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S T. PEARCE. MACHINE FOR SEPARATING 033% AND OTHER MATERIALS.

No. 80,763. Patented Aug. .4,- 1868.

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Letters Patent No.'80,763, dated August 4, 1868.

rurnovso mourns r012 srrnnmne ones AND ornnn MATERIALS, I

dil fitlnhultnternh" In in these interment ant linking part of ilg'esnne TO ALL WHOM IT 'MAY CONCERN: I

Be it knownthatI,-Strm unn T. PEARCE, of the city, county, and State ofNew York, have invented anew and improved Machine for Separating Oresj and I do hereby declare that'the following is a full, clear, and

exact. description thereof, which will enable others skilled imthe art to make and use the same, reference being bad to the accompanying drawings, forming apart of this specification. I

The object of this invention is to provide an improved machine for separating finely-pulverizedoore, sand, and other substances by the combined'aetion of centrifugal foree and frictional contact. I

It consists of an arrangement of means whereby'the granulnted'and sized substance-to be. acted upon,

being discharged upon the surface of a comet polishedmetal under rotary motion upon its vertical axis, will I beset into motion by the contact of the same with the cone, and discharged therefrom in various lines,"g overned by thes'pecific gravity of the'partieles and the'frietional quality of the same, in amanner to fall into various receptacles-arranged with reference to the various positions in which the particles will fall to separate them in theorder'o'f their falling. I i I I o Figure 1 representsla sectional elevation of my improved apparatus, takenon the line of fig.-2; and Figure 2 represents a horizontal section of the same, taken on the line 9 y of fig.

I Similar'letters'of reference indicate corresponding parts. l I A represents a cone, which 'may be made of any suitable material susceptible .of being highly polished, which is suspended'on -a vertical shaft, B, arranged in any. suitable framing, and providedwith means for giving it rotation.

II 0 represents a spout, for conveying the material to beseparated to the surface-of the cone, near the top, and preferably at oneside of the radial line'of the said eone. I I

I) represents a'receptacle for the ore or other substance, which is divided into compartments, a a 'a a, and

(1 ol' d d, having spouts communicating with other receptacles, or with elevators, for conveying the ore backto.

the spent 0, or to other separating-apparatus. I I I I Supposing the sand or fine ore, which has been previously sized; by sifting or otherwise, to be discharged in a fine jet through. the tube C upon the none, at the point e, while the same. is in a state of rotarymotion,

these particles having -the greatest-specific gravityoand the least frictional quality will be first discharged from the surface of the cone, and fall into the compartment 2, vihile those having, say, about the same weight, but more frictional quality, will be discharged into the compartment d,- Tmle, again, those having aless weight and frictional quality, would be discharged intov the compartmentahand 'so ou,'iu the same order, the whole will be distributed according to their qualities of weight-and frietiom'which may be determined-for the different grades by thereceptaclcs into which they fall. I V I I I The form of the cone may be varied as desired, by making the inclination more orless abrupt, or making the surface concave or convexJ The sizing may, if preferred, be done after the particles have been submitted to the action of the separator,"

in which-case it will be found that small particles, of high specific gravity, and large particles, of low specific gravity,-will full together, which may be separated by sifting.

This improved machine may-be used with excellent results in'a vacuum for separating suchfine particles.

as would in the'open atmosphere be taken up by it and carried away.

I It may also be used with advantage in separating grain andother articles.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- I I 1. A mechanism, arranged to separate the particles of pnlverizedore or-other granular substance, by

'impelling it, by the joint actionof gravity and centrifugalforce, over a metallic, or other polished surfnce, which will modify, by the frictionalcontact of the same, the direction imparted to the particles of suchsubstance, Substantially as and for the purpose set forth. I I I 2. The combination, withthe rotating cone Afof the receptacle'D, divided into compartments, substantially as and forthe purpose described. I I I The above'specifi cation of my invention signed by me, this 15th d'ayof July, 1868.

' i S. T; PEARCE.

Witnesses: I a l l i Fnsnx Bnocxnnr, 'Onss'. A. Psrrir. 

